Fritz schirmacher



F. SCHIRMACHER. TRIGGBR- MEGHANISM POR PIRE ARMS.

(No Model.)

UNTTED STATES PATENT OFFICEo FRITZ soHInMAoHER, oF FoBsTHAU. contra,GERMANY.

TRIG'GER MECHANISM FOR FIRE-ARMS.

SPECIFICATION forming part of Letters Patent No. 360,733, dated April 5,1887.

Application filed July 1, 1886. Renewed February 10, 1887. Serial No.227,177. (No model.)

T0 all whom it' may concern? Beit known that I, FRITZ SCHIRMACHER, otForsthaus-Gritz, Germany, have invented a new and Improved Automaticrlrigger for Fire-Arms, of which. the following specification is a full,clear, and exact description.

The herein-described invention relates to an automatic trigger forfire-arms, which has for its purpose to enable the soldier, hunter,Svc., to aim at an object and to re without giving special attention tothe trigger.

The invention consists of the various improvements hereinafter morefully specified.

In the accompanying drawings, Figurelrepresents a longitudinal verticalsection of a breech-loading fire-arm with partial side view of thebreech. Fig. 2 is a longitudinal horizontal section of the same on lineA B, Fig. 1.-- Fig. 3 is part of a side view of the breechloader. Fig. 4is a detail of the ratchet mechanism on an enlarged scale.

a and b are two disks, united together by small studs cc. These disksare mounted, together with a third disk, d, placed behind and attachedto the disk b, upon the axis e of a a box or case, f, within which anordinary iiat spiral spring (not shown in the drawings) is arranged,similar to a watch-spring, acting on said shaft. The disk d is fixedupon the axis e, and is provided on its periphery with one or morerecesses or notches, d', in one of which, at a given moment, the catchor click fi, fixed to the lever-arm g', will fall, while the joineddisks a and I) can turn with it. The latter cannot turn in a reversedway, being prevented by the ordinary catch inside of the'box, retainingalso the spiral spring. (See small arrow, Fig. l.)

g and g' form a lever, with two branches or arms, having its fulcrum inr/' A spring, 7L', attached to the outside of the case f, enters withits free end into a recess in the lever-arm g, and thus retains by itstension the catch/5 on the lever-arm g in one of the recesses d of thedisk d. The free end of the lever-arm g is formed as a hook forreceiving the curved or hooked end of a rod, 7L. The bent end k of asecond rod, k, is placed behind one of the studs c in the normalposition of the bar.

The entire mechanism described heretofore is placed in a recess in thebreech and is closed by a fiat cover, which corresponds at its outerside with the outer face of the breech. The bars h and L' are placed ina groove, E, made in the wooden part of the breech, reaching from nearthe butt-end to the gun-lock. The groove is covered in a similar manner.

By means of two united links, ZZ', Figs. 2 and 3, this bar It isattached at its hookforined forward end to the one end, m, of anangle-leveren m/,whieh has its fulcrum upon the pin or stud mi'. Thelever-arm m is provided on its free end with a button or knob, a,reaching through a hole or slit to the outside of the lock.

The bar k, which runs nearly parallel to the bar h,and in the samelongitudinal groove E, is attached to the lower end of the levers o 0'-viz., to the stud or bridge o-uniting them. The levers o o are placed,together with the trigger, upon a stud,F, around which they can turn.This stud is attached to the end of the trigger-spring G. By forcing thestud F downward the spring will be spanned and the nose j.) withdrawn.It is essential to observe here that the rounded upper part of thetrigger slides alongside of the metal face F', which serves also as astay or butt to it. The upper surfaces, o'l and o, of the levers o and oare also rounded, and slide in the same manner along face F. All threework similar to a cam against their face FQ and cause the lowering ofthc stud F, thereby spanning the spring (i and moving the nosepdownward. As soon as this nose has been lowered sufticiently themainspring H and the firing pin or needle J become free, and the shotwill be fired.

K, Fig. 3, is a safety arrangement, by means of which the arm m m islocked when the part K is moved in the direction of the arrow I, and isplaced under the lever-arm m', when the bar h will be locked, and,consequently, the click i will be prevented from moving out of therecess d on the disk d. The musket or gun can be fired either by hand orby this above-described automatic mechanism.

Before shooting,the spring in the spring-box fis wound up, like anordinary watch-spring by means of a key.

It' it is desired to fire the gun in the usual manner, the same is doneby moving the trigger D in the direction of the arrow VIII. When it isdesired to fire the gun by means of this automatic mcchanism,theprojection K is end L of the bar 7.1,

moved clear of the arm m', and as soon as is desired the button nismoved inward, whereby the bar h is raised and the clicki leaves therecess d. The spring of the spring-boxfbecomes free and begins tooperate, turning the disks a and b in the direction of the larger arrow,when the stud c will act upon the bent moving the same so as to turn thelevers o oin the direction of the arrow IV, when the triggerspring G,and with the latter the nosep, will be moved downward.

The main or spiral spring H and the firing pin or needle J, which havebeen retained by the nosep, will then be at liberty to act so as to iirethe gun. Vhen, by the rotation ofthe disk cl, the click i comes oppositethe next recess in said disk, the spring t, acting upon the lever-g,will force the click 12 into this recess,and thus stop the furtheraction ofthe spiral spring. At the same ti me the button n, at the endofthe leverm, will be moved outward again, and the mechanism will remainat rest, ready for the next operation, or when the button uis movedinward again.

I claim as my inventionl. The combination of a spiral spring acting onthe shafte, the disk d, with recesses d in gunstock, and with thetrigger mechanism of 35 the gun, the whole being arranged to operate inthe manner and for the purpose set forth.

2. The combination of a spiral spring actingV 0n shaft e anddisksab,with studs c, placed in a recess in the breech, the rod lc,placed in a groove, E, in the wooden part of the breech or gunstock, andthe levers o o', with camshaped upper surfaces, o2 0:", with trigger l),trigger-spring G, and firing-pin J, substantially as specied.

In testimony whereof I hereunto sign my name, in the presence of twosubscribing witnesses, this 15th day of June, 1886.

FRITZ SCHIRMACI-IER.

Vitn esses:

OscAR SCHIRMA CHER, LoUrsE RUDOPH.

